Knock-off for electric warp stop motion



Oct. 6, 1931. A. A. GORDON KNOCK-OFF FOR ELECTRIC WARP STOP- MOTION Filed sept. 5. 192s j lllllnl mm1J ,f --mesnn llhmlfmnm Wolf/ve/J.

" UNITE-.Dr STATES.

Patented Oct. 6, 1931 l PATENT A* oFFIcE .LBERT A. GORDON,. WORCESTER, IVIASSCHUSETTS, ASSIGNOR T0 CROMLP'ION &

y KNOWLES LOOIM WOR-KS, OF 4WTOBJlEIS'lER,I MASSACHUSETTS, A, CORPORATION Olliy l imssAcHUsErrs n KNooK-orr For; ELncTnrcWAR-r sro-r Mo'rIoN Applicationled September 5,1929. SerialyNo. 399,629.

This invention relates toimprovements in wa'rplstop motions andi particularly tothe knocking-off` mechanism` therefonand it is the general. object o theyinventi'on to provide a simple and durable mechanism ofl this type which` shall act to reset itself upontne 1s an electrical warp stop motiondesignated completion, of the, knocking-citi stroke..

, It is a further object of my present invention to provide, a.A latch., supported, longitudinally movable .memberwhich shall normally be, out of thepath of, a regularly moving actuator, but which whenin: the path of the. latter will be moved to stop the` loom and also-rock'y the latch back` to normal position through the operation ot a cam Vface movable at the timeof knock-ott. f Y

With these and other objects in view which willl appear as-the` description proceeds, my invention resides in the combination andr ar-A rangement :of parts hereinafter ydescribed and' set forth in the claims.

;j'In-the-accompanying drawings, wherein a convenientifembodiment off my invention is set, forth, n Y Figi is; 'a sideelevation of aloom having invention appliedthereto, certain partsbeing'removed; for the sake of clear.- ness.;

the knock-oil mechanism shown in fReferringtoFig. 1, I have shown a loom.

frame 10 and' a. shipper handlell 'pivotally mountedt-hereon at1'2. A knock-ott r-lever lii's operatively connected tothe `shipper leverfbymeans of stud ltiand is pivoted to the frame at15.y Thelower endiof the lever 13 is connected toa rearwardlyextending rod-16 v which operates through .mechanism Fig; 2` is a, side` elevation on an enlarged v not shown to stop thelcom when moved rearwardly. Y

lhe rear partof the loomframe is provided with a stand 17. on which is mounted anupright bar 18 having adjustably secured theretoa rod 19. Extending, across the loom n 24. A small wire' 25A formed of rigid material, andfnon-magnetic ifjso desired, eX- tends through the coiled wire and is rigidly attached to the left hand' end of acore, 26 of the solenoid, asshown in Fig., 6. i j Apair'ofcontact bars 2.7 andV 28 are insulated fromtheend plate 21a-nd guide a plurality of dropy wires D. A contact yrod 29 is locatedl above-and intermediate the bars 27 and 28y and is positionedfor engagement withvthe heads 30 of the' drop wires.

In the operation ofl the mechanism thus far described the parts, willremain stationary until a fault in the warp occurs, atwhich time the drop wire corresponding tothe defective warp will be' lowered until the head thereof engages the rod 29'., This drop wirewill' be in engagement with one or another of the guide visbars f 27 and V28, ysor that current will flow through the following circuit: battery P, wire 3l, binding post 32. ontixedstand 33a of insulating material, spring 33, contact screw 34 on insulated carrier 35 held by screw v 36 to knock-olii rod 37, from screw 34 to wire 38, vbinding post f 39 insulated from the end plate, wire'elO to one or another ofthe bars 27' and 28,'through the drop wire, rod 29, wire 4l, solenoidk 20, wire 42 binding post 43, also insulated fromtheend plate, and. wire-.44

backto. thebattery AP. Current owing this. circuit will energize the solenoid-A so 4that the latter will move'the core 2,6- tothe/,left from the position shownin1 Eig.y 6. Inasion A much as the push wire 25 is connected to the core 26, said wire will also be moved to the left.

The matter thus far described of itself forms no part of my present invention. The relation of the solenoid and the head or end plate 21 is made the subject matter of a separate application Ser. No. 397,408.

My invention relates more particularly to the knock-olf which is illustrated particularly in Figs. 2, 3, 4 and 5. rIhe bottom shaft 56 has secured thereto track cam 51 which rcceives a cam roll 52 mounted on the substantially horizontal aiin 53 of a lever 54. The latter is mounted on a small stand 55 secured to the loom frame and has a vertically extending actuator arm 56. During the normal operation of the loom the ai'm 56 will move back and forth between the full and dotted line positions, the time of the rearward movement, which is that part of the stroke which etiects knock-olf, being` determined by the angular position of the cam with respect to the shaft.

Pivoted to the lower end of the lever 13 and extending rearwardly therefrom is the previously mentioned knock-oil;i rod 37 to the rear end of which is adjustably connected longitudinally thereof a head 58. The latter has a depending shoulder 59 which is adapted for engagement with the actuator a in 56 at the time of warp fault. rIhe right hand end of the head as viewed in Fig. 2 is rectangular in cross section as shown in Fig. 3 at 60 and extends through a slot 61 formed in an upstanding arm 62 on support 63. The latter is held to the looinside by means of bolts 64; and has secured therein a horizontally extending in 65 on which is mounted pivotally a latch 66. The latter has a depending finger 6T which lies in the path of the lower end of the wire 25. The coiled wire 23 is secured in the support 63 by means of a set screw 67a.

The upper part of the latch is formed as a supporting arm 68 on which normally rests the lower surface 69 of the head 58. If desired I may form the upper face of the arm 68 with an inclinel 70 which extends downwardly and to the left as viewed in Figs. 3 and 4. The coacting surface 69 may be similarly inclined so that the weight of the head 58 will act to hold the linger 67 normally against the support 63 in the position shown in Fig. 3.

By referring to Fig. 3, it will be seen that the arm 68 is substantially in alignment with the slotv 61 and lies under the rectangular portion 6() of the head 58 and that the arm is undercut as at 72 to make room for portion 60 when it falls.

In the operation of the mechanism the arm 56 will move without engagement of the shoulder 59 so long as the latch 66 is in the position shown in Fig. 3. Vhen the solenoid is energized, as heretofore described, the Awire 25 will receive an en'dwise motion in a direction to move the linger 67 from the position shown in Fig. 3 to that shown in Fig. 1l, thereby removing the arm 68 from under the head 58 and permitting the latter to fall. On the next inoveinnt of the actuator arm 56 from the dot-tedlto the full line position shown in Fig. 1 the head and rod 37 will be moved to the right from the position shown in Fig. 1, thereby rocking the lever 13 and shipper handle 11 and moving the rod 16 to effect stoppage of the loom. During the knocking od operation it will be understood tliat'the head 58 moves to the right from the full to the dotted line position shown in Fig. 2.

.In order to eifect resetting of the mecha nisni I secure to one of the vertical faces of the portion 60 a cam plate 73 having a surface 7d inclined with respect to the plane of movement of the head and positioned to engage the arm 68. As the head 58 moves to the right as viewed in Figs. 2 and 7 in lowered position the cam face l engages arm 68 and moves it from trie abnormal position shown in Fig. Ll to normal position as shown in Fig. 3. llhe part 60 is held in slot 6l against lateral movement and therefore enables the cam 73 to accomplish the desired result. This action takes place while the head is in the dotted line position shown in Fig. 2. The parts will remain in this position while the loom is stopped because of the fact that the shipper handle will be in knock-olf' position and movement of rod 37 pulls screw 34 away from spring 33, thereby breaking the circuit and deenergizing the solenoid, thus perinitting reverse movement of wire 25 by cam 74 acting through the latch. After the fault in the warp has been corrected the weaver will pull the shipper handle forwardly or to the left as viewed in Fig. 1, the effect of which will be to move the head forwardly. An upwardly and forwardly inclined surface 75 on the under side of the head will engage a correspondingly inclined surface 76 on the latch, so that movement to the left on the part of theliead as viewed in Fig. 2 will cause the saine to rise upwardly to the full line position. In this way the parts are restorei to their normal position.

It is to be understood that the bottoni 77 of the slot on which the surface 69 slides is so placed that the latch can move pivotally under the bottom surface 78 of the head 58. In order to keep the latch in the normal position shown in F ig. 3 after it has been moved thereby the cam clip or plate 73 the linger 67 is counterweighted as at 79.

From the foregoing it will be seen that I have provided a knock-off rod having a head normally held in raised position by a latch which is movable to head relieving position, whereupon the latter will fall into the path of the actuator. It will also be seen that during the completion of the knocking-off stroke the latch is automatically restored to position, and that when the pull rod 37 is moved Mlio to running position the head is elevated to normal position.

Having thus described my invention it will be seen that changes and modifications may be made therein by those skilled in the art without departing from the spirit and scope of the invention and I do not Wish to be lim* ited to the details herein disclosed, but what I claim is:

l. In a warp stop motion for a loom having a rod to be moved longitudinally to etfect loom stoppage, a regularly moving actuator, a head on the rod, a pivoted latch located under the rod and engaging the head to support the same, means uponoccurrence of warp fault to rock the latch out ot supporting position with respect `to the head, the head thereupon falling into engaging position with the actuator to b moved by the latter to stop the loom, means operative during the stop yping of the loom to restore the latch to normal position, and coacting inclined faces formed on the head and latch, whereby movement of the rod to running position will effeet raising of the head to normal position Where it is supported by the latch.

2. In a warp stop motion for a loom having a rod to be moved longitudinally to elect loom stoppage, a regularly moving actuator, a head formed on the rod, a latch normally supporting the head out of the path of movement of the actuator, means operative upon warp fault to move the latch outof supporting position with respect to the head, where-- upon the latter will tall into the path of the v actuatorto be engaged by the latter to eect longitudinal movement cf the rod, and resetting means movable with the head yto engage i the latch and restore the latter to normal po Vec sition during the completion of the knock-off movement of the rod, the resettingV means comprising a cam face 'carried by the head to engage the latch to move the latter toward normal position during the completion of thc knoclcctt stroke of the rod.

gaged by the other during the latterpart of the movement of the head under influence of the actuator to restore the latch member tov normal position. l

4. In a warp stop motion for a loom having a rod to be moved longitudinally to effect loom stoppage, a regularly moving actuator, a head formed on the rod, a latch' normally supporting the head out of the path of'movement ofthe actuator, and means'operativey direction to cause loom running, a regular y "porting the.

Pertegrts vithzjrsjrt fj bh''hea a vvliereuponY the latter will fall into the o t the actuator to be engaged vtlf'felatter Y to effect 'longitudinal movement `yof they rod,

uitrit-ahaha hanl n vlag appa aaa meer named aaa-aa, lapatata, ae weight-af the coacting the surfaces to .hold'thegl'atchgln normal position.

:fsa-fans moths para 'or uit man@ to fb@ moved by the Vlatter toeect lom stoppage,

ap Op to nia-lt a'wawaamovement 'of the 'head when the latter unsupported the latch, cam 'means effective during the ing lom 'sftdppingdirfetion to restore 'the latch :to L'normal position, moving said latch when -the head moves in a direction to k*cause ruiming of the loomto ylitt the "ha'd away aan als aap aaa-reabre rhaaaefaraiai position.

a maa facets-1era @ne aaseaqa stesa g 10a faeppage aaa @novata ai@ Opas-sae moving'actuator, a'guide `for 'the yhead *li of the 'directionwhich the he ad moves :to gaat -10maoppagajth iatchineaaauy fs'ap- 'A head in Araised position, and f to the latch 'out 'of supporting Tpo'- ,sition'with respecftlt'o the heatl,`whreeby`the litterwill 4falliti the 'guide and vinto the ,path

'ofthe vvactuator tobe movedby the'l'atterina lesa-1 @veel fhjfgaeid-1eadelle @arable i'ferteally. .H1 @beneiden lafh'pif'- otally mounted'to move inaplanetransfverse y'7. In a warp stop,mbtionffor'aflob'm 1,

"a heladikmovable in one directionto 'e'ctlo'om 'stop'pageand'movable in "the opposite direc- Ition 'to cause loom running, 'a regularly mov- CtutOr, a *guide "for ythe head ylimiting jlaterallmovement therof,"saidhead being. movable `vertically in the' guide, a v"latch lpivotally mounted to move in a. plane `transverse "of thedirectionin whichthe Aliefadmoves to eiectloom stoppage, theflatch y'norhflally\supportihgith'ehea'd .in'rai'sed position, means to rock the latch out of supporting position with n* respect to the head, whereby the latter will fall in the guide and into thepath ot the actuator -to'be moved by the latter in a loom stopping direction, and means effective dur-.,f.

ingthe completionY of the loom stoppingmovement of ,the head to move the latch in a direction transverse of the direction in which the head is moving to restore said latch to normal position. e 8. In a warp stop motion for a loom having a head movable in one direction to effect loom stoppage and movable in the opposite direction to cause loom running, a regularly moving actuator, a guide for the head limiting lateral movement thereof, said head being movable vertically in the guide, a latch pivotally mounted to move in a plane transverse of the direction in which the head moves to effect loom stoppage, the latch normally supporting the head in raised position, means to rock the latch out of supporting position with respect the head, whereby the latter will fall in the guide and into the path of the actuator to be moved by the latter in a loom stopping direction, means eiective during the completion of the loom stopping movement of the head to move the latch in a direction transverse of the direction in which the head is moving to restore said latch to normal position, and additional means operative upon movement of the head in a direction to cause running of the leoni to lift said hea-d out of engaging position with respect to the actuator.

9. In a warp stop motion for a loom havinga head movable in one direction to effect loom stoppage and movable in the opposite directionk to cause loom ruiming, a regularly moving actuator, a guide for the head limiting lateral movement thereof, said head being movable vertically in the guide, a latch pivotally mounted to move in a plane transverse of the direction in which the head moves to effect loom stoppage, the latch normally V supporting the head in raised position, means to rock the latch out of supporting position with respect to the head, whereby the latter will fall in the kguide and into the path of the kactuator to be moved by the latter in a loom stopping direction, means eiiective during the completion of the loom stopping movement of the head to move the latch in a direction transverse of the direction in which the head is moving to restore said latch to normal posi- "O tion, and additional means operative upon movement of the head in a direction to cause running of the loom to lift said head out of engaging position with respect to the actuator, saidvlast named additional means com- "0 prising coacting inclined surfaces on the head and latch.

In testimony whereof I have hereunto ai'- iixed my signature.

ALBERT A. GORDON. 

